I'm not perfect, but I'm always me.
在外交中,信任是一个更宝贵的货币,而不是金钱。
The young do not know enough to be prudent, and therefore they attempt the impossible – and achieve it, generation after generation.
Think globally, act locally.
随机实验是因果推理的黄金标准,但它们并不总是可行的。